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The Waikato Environment for Knowledge Analysis (WEKA), a machine
learning workbench. This is the stable version. Apart from bugfixes, this version
does not receive any other updates.
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* InstancesSummaryPanel.java
* Copyright (C) 1999 University of Waikato, Hamilton, New Zealand
*
*/
package weka.gui;
import java.awt.BorderLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import weka.core.Instances;
/**
* This panel just displays relation name, number of instances, and number of
* attributes.
*
* @author Len Trigg ([email protected])
* @version $Revision: 9349 $
*/
public class InstancesSummaryPanel extends JPanel {
/** for serialization */
private static final long serialVersionUID = -5243579535296681063L;
/** Message shown when no instances have been loaded */
protected static final String NO_SOURCE = Messages.getInstance().getString(
"InstancesSummaryPanel_NO_SOURCE_Text");
/** Displays the name of the relation */
protected JLabel m_RelationNameLab = new JLabel(NO_SOURCE);
/** Displays the number of instances */
protected JLabel m_NumInstancesLab = new JLabel(NO_SOURCE);
/** Displays the number of attributes */
protected JLabel m_NumAttributesLab = new JLabel(NO_SOURCE);
/** The instances we're playing with */
protected Instances m_Instances;
/**
* Whether to display 0 or ? for the number of instances in cases where a
* dataset has only structure. Depending on where this panel is used from, the
* user may have loaded a dataset with no instances or a Loader that can read
* incrementally may be being used (in which case we don't know how many
* instances are in the dataset... yet).
*/
protected boolean m_showZeroInstancesAsUnknown = false;
/**
* Creates the instances panel with no initial instances.
*/
public InstancesSummaryPanel() {
GridBagLayout gbLayout = new GridBagLayout();
setLayout(gbLayout);
JLabel lab = new JLabel(Messages.getInstance().getString(
"InstancesSummaryPanel_Lab_JLabel_Text_First"), SwingConstants.RIGHT);
lab.setBorder(BorderFactory.createEmptyBorder(0, 10, 0, 0));
GridBagConstraints gbConstraints = new GridBagConstraints();
gbConstraints.anchor = GridBagConstraints.EAST;
gbConstraints.fill = GridBagConstraints.HORIZONTAL;
gbConstraints.gridy = 0;
gbConstraints.gridx = 0;
gbLayout.setConstraints(lab, gbConstraints);
add(lab);
gbConstraints = new GridBagConstraints();
gbConstraints.anchor = GridBagConstraints.WEST;
gbConstraints.fill = GridBagConstraints.HORIZONTAL;
gbConstraints.gridy = 0;
gbConstraints.gridx = 1;
gbConstraints.weightx = 100;
gbConstraints.gridwidth = 3;
gbLayout.setConstraints(m_RelationNameLab, gbConstraints);
add(m_RelationNameLab);
m_RelationNameLab.setBorder(BorderFactory.createEmptyBorder(0, 5, 0, 10));
lab = new JLabel(Messages.getInstance().getString(
"InstancesSummaryPanel_Lab_JLabel_Text_Second"), SwingConstants.RIGHT);
lab.setBorder(BorderFactory.createEmptyBorder(0, 10, 0, 0));
gbConstraints = new GridBagConstraints();
gbConstraints.anchor = GridBagConstraints.EAST;
gbConstraints.fill = GridBagConstraints.HORIZONTAL;
gbConstraints.gridy = 1;
gbConstraints.gridx = 0;
gbLayout.setConstraints(lab, gbConstraints);
add(lab);
gbConstraints = new GridBagConstraints();
gbConstraints.anchor = GridBagConstraints.WEST;
gbConstraints.fill = GridBagConstraints.HORIZONTAL;
gbConstraints.gridy = 1;
gbConstraints.gridx = 1;
gbConstraints.weightx = 100;
gbLayout.setConstraints(m_NumInstancesLab, gbConstraints);
add(m_NumInstancesLab);
m_NumInstancesLab.setBorder(BorderFactory.createEmptyBorder(0, 5, 0, 10));
lab = new JLabel(Messages.getInstance().getString(
"InstancesSummaryPanel_Lab_JLabel_Text_Third"), SwingConstants.RIGHT);
lab.setBorder(BorderFactory.createEmptyBorder(0, 10, 0, 0));
gbConstraints = new GridBagConstraints();
gbConstraints.anchor = GridBagConstraints.EAST;
gbConstraints.fill = GridBagConstraints.HORIZONTAL;
gbConstraints.gridy = 1;
gbConstraints.gridx = 2;
gbLayout.setConstraints(lab, gbConstraints);
add(lab);
gbConstraints = new GridBagConstraints();
gbConstraints.anchor = GridBagConstraints.WEST;
gbConstraints.fill = GridBagConstraints.HORIZONTAL;
gbConstraints.gridy = 1;
gbConstraints.gridx = 3;
gbConstraints.weightx = 100;
gbLayout.setConstraints(m_NumAttributesLab, gbConstraints);
add(m_NumAttributesLab);
m_NumAttributesLab.setBorder(BorderFactory.createEmptyBorder(0, 5, 0, 10));
}
/**
* Set whether to show zero instances as unknown (i.e. "?" rather than zero).
* This is useful if header information has been read and the instances
* themselves will be loaded incrementally.
*
* @param zeroAsUnknown true if zero instances will be displayed as "unknown",
* i.e. "?"
*/
public void setShowZeroInstancesAsUnknown(boolean zeroAsUnknown) {
m_showZeroInstancesAsUnknown = zeroAsUnknown;
}
/**
* Get whether to show zero instances as unknown (i.e. "?" rather than zero).
* This is useful if header information has been read and the instances
* themselves will be loaded incrementally.
*
* @return true if zero instances will be displayed as "unknown", i.e. "?"
*/
public boolean getShowZeroInstancesAsUnknown() {
return m_showZeroInstancesAsUnknown;
}
/**
* Tells the panel to use a new set of instances.
*
* @param inst a set of Instances
*/
public void setInstances(Instances inst) {
m_Instances = inst;
m_RelationNameLab.setText(m_Instances.relationName());
m_RelationNameLab.setToolTipText(m_Instances.relationName());
m_NumInstancesLab
.setText(""
+ ((m_showZeroInstancesAsUnknown && m_Instances.numInstances() == 0) ? "?"
: "" + m_Instances.numInstances()));
m_NumAttributesLab.setText("" + m_Instances.numAttributes());
}
/**
* Tests out the instance summary panel from the command line.
*
* @param args optional name of dataset to load
*/
public static void main(String[] args) {
try {
final javax.swing.JFrame jf = new javax.swing.JFrame(Messages
.getInstance().getString("InstancesSummaryPanel_Main_JFrame_Text"));
jf.getContentPane().setLayout(new BorderLayout());
final InstancesSummaryPanel p = new InstancesSummaryPanel();
p.setBorder(BorderFactory
.createTitledBorder(Messages
.getInstance()
.getString(
"InstancesSummaryPanel_Main_P_SetBorder_BorderFactoryCreateTitledBorder_Text")));
jf.getContentPane().add(p, BorderLayout.CENTER);
jf.addWindowListener(new java.awt.event.WindowAdapter() {
@Override
public void windowClosing(java.awt.event.WindowEvent e) {
jf.dispose();
System.exit(0);
}
});
jf.pack();
jf.setVisible(true);
if (args.length == 1) {
java.io.Reader r = new java.io.BufferedReader(new java.io.FileReader(
args[0]));
Instances i = new Instances(r);
p.setInstances(i);
}
} catch (Exception ex) {
ex.printStackTrace();
System.err.println(ex.getMessage());
}
}
}
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